Cita APA (7th ed.)

Cook, J., Cook, J., Bongard, E., Heneghan, C., & Butler, C. (2023). Conditional versus non-conditional incentives to maximise return of participant completed questionnaires in clinical trials: A cluster randomised study within a trial. BioMed Central.

Cita Chicago (17th ed.)

Cook, J., JA Cook, E. Bongard, C. Heneghan, i CC Butler. Conditional Versus Non-conditional Incentives to Maximise Return of Participant Completed Questionnaires in Clinical Trials: A Cluster Randomised Study Within a Trial. BioMed Central, 2023.

Cita MLA (9th ed.)

Cook, J., et al. Conditional Versus Non-conditional Incentives to Maximise Return of Participant Completed Questionnaires in Clinical Trials: A Cluster Randomised Study Within a Trial. BioMed Central, 2023.